<template>
	<view>
		<view class="cart-container" v-if="cart.length !== 0">
		<address-item></address-item>
		<!-- 商品列表区域 -->
		<!-- uni-swipe-action 是最外层包裹性质的容器 -->
		<uni-swipe-action>
		  <block v-for="(goods, i) in cart" :key="i">
		    <!-- uni-swipe-action-item 可以为其子节点提供滑动操作的效果。需要通过 options 属性来指定操作按钮的配置信息 -->
		    <uni-swipe-action-item :options="options" @click="swipeActionClickHandler(goods)">
		      <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
		    </uni-swipe-action-item>
		  </block>
		</uni-swipe-action>
		<my-settle></my-settle>
		</view>
		<view class="empty-cart" v-else>
		    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
		    <text class="tip-text">空空如也~</text>
		  </view>
	</view>
</template>

<script>
	import { mapGetters,mapMutations } from 'vuex'
	import badgeMix from '@/mixins/tabbar-badge.js'
	
	export default {
		 mixins: [badgeMix],
	  data() {
	    return {
			options: [{
			      text: '删除', // 显示的文本内容
			      style: {
			        backgroundColor: '#C00000' // 按钮的背景颜色
			      }
			    }]
		}
	  },
	  computed: {
	    // 将 m_cart 模块中的 total 映射为当前页面的计算属性
	    ...mapGetters('m_cart', ['total','cart']),
	  },
	  onShow() {
	     // 在页面刚展示的时候，设置数字徽标
	     this.setBadge()
	  },
	  methods: {
		  ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
	     setBadge() {
	        // 调用 uni.setTabBarBadge() 方法，为购物车设置右上角的徽标
	        uni.setTabBarBadge({
	           index: 2, // 索引
	           text: this.total + '' // 注意：text 的值必须是字符串，不能是数字
	        })
	     },
		  radioChangeHandler(e) {
		     console.log(e) // 输出得到的数据 -> {goods_id: 395, goods_state: false}
		   },
		numberChangeHandler(e) {
		  console.log(e)
		},
		swipeActionClickHandler(goods) {
		  console.log(goods)
		}
	  }
	}
</script>

<style lang="scss">
.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text {
    margin-left: 10px;
  }
}
.goods-item {
  // 让 goods-item 项占满整个屏幕的宽度
  width: 750rpx;
  // 设置盒模型为 border-box
  box-sizing: border-box;
  display: flex;
  padding: 10px 5px;
  border-bottom: 1px solid #f0f0f0;
}
.cart-container {
  padding-bottom: 50px;
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
